Preparation and Standardization of 0.1 M Ethanolic Potassium Hydroxide : Pharmaguideline
  •   Pharmaguideline Courses Enroll Now
  • Sep 25, 2010

    Preparation and Standardization of 0.1 M Ethanolic Potassium Hydroxide

    Preparation and standardisation of 0.1 M Ethanolic Potassium Hydroxide using Hydrochloric acid and Phenolphthalein solution used for pharmaceutical analysis.

    Ethanolic Potassium Hydroxide Solution Preparation

    • Dissolve about 6 g of potassium hydroxide in 5 ml of water.
    • Add sufficient aldehyde-free ethanol (95 %) to produce 1000 ml.
    • Allow the solution to stand in a tightly-stoppered bottle for 24 hours.
    • Then quickly decant the clear supernatant liquid into a suitable, tightly-closed container.
    • Standardize the solution in the following manner.

    Ethanolic Potassium Hydroxide Solution Standardization

    • Pipette 20.0 ml of 0.1 M hydrochloric acid into a flask.
    • Dilute with 50 ml of water and add 0.1 ml of phenolphthalein solution.
    • Titrate with the ethanolic potassium hydroxide solution until a permanent pale pink color is produced.
    • Store protected from light and moisture.
    • 1 ml of 0.1 M hydrochloric acid is equivalent to 0.00561 g of KOH.
    Also see: Determination of Shelf Life of Solutions in Laboratory

    No comments:

    Post a Comment

    Please don't spam. Comments having links would not be published.


    Popular Categories

    QA SOPs QC SOPs Micro SOPs HVAC Production SOPs Stores SOPs Checklists Maintenance SOPs HPLC Sterile GLP Validation Protocols Water System GDP Regulatory Maintenance Calibration Warning Letters Education B.Pharmacy
    Online Courses


    Follow Pharmaguideline



    DOCUMENTS

    PHARMACEUTICAL DOCUMENTS




    Editable Pharmaceutical Documents in MS-Word Format. Ready to use SOPs, Protocols, Master Plans, Manuals and more...

    View


    adsbypg


    GET APP FOR NEWS UPDATES


    Android App